Creative strategies for wetland restoration
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Transcript of Creative strategies for wetland restoration
Reedcanarygrass(Phalarisarundinacea)dominateswetlandandriparianareasacrosstheU.S.• Considerednon-na%veinPNWbutna%ve
inotherareasofU.S.• Reducesna%veplantandinvertebrate
diversity
Treatment TreatmentDescriptionMow-Burn(MB) MowlateJuly,whenseedheadsareforming
BurnSeptember-October(weather-dependent)Mow-Herbicide(MH) MowearlyJulywhenplantisbolting,seedheadsarestartingtoform
SpraySeptember,whenthere’snewgreengrowthHerbicide-Burn(HB) SprayAugust,whenthere’sactivegreengrowth
BurnSeptember-October(weather-dependent)Mow-Herbicide-Burn(MHB) MowearlyJulywhenplantisbolting,seedheadsarestartingtoform
SpraynewgrowthinearlyAugust,whenthere’sactivegreengrowthBurninSept-October(weather-dependent)
Control Notreatment
RCGRemovalTreatments
• Alltreatmentswereappliedin10mx10mplotsin3sites:Watkins,Johnson,TrainingArea14• Treatmentsappliedin2011,2012,2013• In2014,20Juncussupiniformisplantsplantedineachplot• Monitoredvegeta%onin2014,2015,2016in8-1m2quadrats/plot
Treatmenteffectsonreedcanarygrass
0"
10"
20"
30"
40"
50"
60"
70"
80"
90"
100"
Control" MB" HB" MH" MHB"
Percen
t"cover"re
ed"canary"grass"
Reed"canary"grass"Other"NonBnaCves"
a"a"
b" b"
b"
Treatmenteffectsonvegeta%on
0"
1"
2"
3"
4"
5"
6"
Control" MB" BH" MH" MBH"
Species"R
ichne
ss"
Na<ve"Richness"
Nonna<ve"Richness"
MBH>Na<ve:Control>Na<ve"p=0.0371"
a"
b
a"
ab"ab"
HB
0"10"20"30"40"50"60"70"80"90"
100"
Control" MB" HB" MH" MHB"
Percen
t"Co
ver"Thatch"
0"5"
10"15"20"25"30"35"40"45"
Control" MB" HB" MH" MHB"
Dep
th"(cm)"
a"
b"
b"b"
b"Thatch
Juncussupiniformissurvival
0"
10"
20"
30"
40"
50"
60"
70"
80"
90"
MB" HB" MH" MBH"
Percen
t"survival"
ab ab
b
a
StaffordCreekCorrec%onalCenterAquacultureFacility Fishtank–Koi!
Nitrifica%ontank
Pla`ormbedsformats
Filtra%ontanks
Pre-vegetatedmat
RCGpre-treatmentareas-eitherMow-HerbicideorMow-Solarize
1mx1mmonitoringplot
3m
3m4m
12m